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Diffstat (limited to '')
-rw-r--r-- | src/TagFile.cxx | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/TagFile.cxx b/src/TagFile.cxx new file mode 100644 index 000000000..046778bd2 --- /dev/null +++ b/src/TagFile.cxx @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "TagFile.hxx" + +extern "C" { +#include "uri.h" +} + +#include "DecoderList.hxx" +#include "decoder_plugin.h" +#include "input_stream.h" + +#include <assert.h> +#include <unistd.h> /* for SEEK_SET */ + +bool +tag_file_scan(const char *path_fs, + const struct tag_handler *handler, void *handler_ctx) +{ + assert(path_fs != NULL); + assert(handler != NULL); + + /* check if there's a suffix and a plugin */ + + const char *suffix = uri_get_suffix(path_fs); + if (suffix == NULL) + return false; + + const struct decoder_plugin *plugin = + decoder_plugin_from_suffix(suffix, NULL); + if (plugin == NULL) + return false; + + struct input_stream *is = NULL; + Mutex mutex; + Cond cond; + + do { + /* load file tag */ + if (decoder_plugin_scan_file(plugin, path_fs, + handler, handler_ctx)) + break; + + /* fall back to stream tag */ + if (plugin->scan_stream != NULL) { + /* open the input_stream (if not already + open) */ + if (is == nullptr) + is = input_stream_open(path_fs, mutex, cond, + NULL); + + /* now try the stream_tag() method */ + if (is != NULL) { + if (decoder_plugin_scan_stream(plugin, is, + handler, + handler_ctx)) + break; + + input_stream_lock_seek(is, 0, SEEK_SET, NULL); + } + } + + plugin = decoder_plugin_from_suffix(suffix, plugin); + } while (plugin != NULL); + + if (is != NULL) + input_stream_close(is); + + return plugin != NULL; +} |